Hitachi PC-ARF Technical Catalogue page 321

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5 Centralised remote controls

Main Unit Registration

Only one unit can be registered as the main unit of a group. Thus, duplicate registration of the main unit is not possi-

ble inside a group. If the unit registered as the main unit has to be changed for some reason, then cancel the current

When the indoor units with fan speed of 4 and 3 tap are mixed in same remote control group, register the indoor unit

with fan speed of 4 tap as the main unit. If the indoor unit with fan speed of 3 tap is registered as the main unit, fan

speed setting of 4 tap cannot be applied for this group.

When mixing indoor units with automatic swing louvre and indoor units with automatic swing louvre together in the

same remote control group, an indoor unit with auto-louvre shall be registered as the main unit of the group. If an

indoor unit without auto-louvre is registered as the main unit, then the auto-louvre setting cannot be applied for the

entire group.

When registering a group which has no transmission wiring, the indoor unit without a remote control switch cannot be

registered as the main unit.

Sub Unit Registration

A maximum of 15 sub units can be registered in the same remote group with the main unit (when applying the control

pattern of 2 blocks with 16 groups each).

Indoor units without a remote control switch cannot be registered as sub units.

In case of changing the registration of an indoor unit which is already registered as a sub unit, cancel the register set-

tings first, and then proceed to the new register.

Registration of a group (Main unit)

1 Select "Group Register" on the "Service Menu" screen.

This function cannot be selected when the external input signal is input to the external input terminal 1 or 2.

2 Select "Main Unit Register" on the "Group Register".

TCGB0106 rev.0 - 12/2014

Troubleshooting